That would be called a "stable" or "static" population - essentially unchanging.
the amount of goods produced at a certain time is called productivity
It achieves what used to be called "ZPG" - zero population growth. Births and deaths are essentially equal. The population sustains itself where it is, but does not grow or shrink.
The distance that a wave travels in a certain amount of time is a wavelength. Wrong,it's speed.(:
It is called a Habitat. A habitat is where a population lives with a diverse amount of species.
Velocity.
Modulation
Repetition or iteration.
When the death rate is higher than the birth rate, it is called a population decline or negative population growth. This means that the population is decreasing in size over time due to more deaths than births occurring within the population.
Modulation
Density= Matter/volume.
the population